If the Earth were significantly smaller, oxygen, water vapor, and other volatiles would escape to space and Earth would lack an appreciable atmosphere.
Indicate whether the statement is true or false.
Ans: True
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A climate that has hot, dry summers and cool, rainy winters is called _____________.
Fill in the blank(s) with the appropriate word(s).
Energy conservation can reduce energy demands but will require a change in the standard of living.
Answer the following statement true (T) or false (F)
Which of the following locations would contain a wide variety of sediment, from large angular blocks to fine rock powder, produced from grinding of the rocks?
A. location 1, along the margins of a glacier B. location 2, along a steep mountain front C. location 3, in sand dunes D. location 4, along a beach E. location 5, on relatively deep seafloor
The amount of biomass on successive trophic levels in a food chain forms a pyramid in which the biomass on trophic level N+1 is only 20% of the biomass on trophic level N. If pesticide P is transferred from one trophic level to the next with 100% efficiency, what will be the concentration of P on trophic level 5 if the concentration of P on trophic level 2 is 4 parts per million (ppm)?
a. 500 ppm b. 2500 ppm c. 20 ppm d.100 ppm